California is introducing a new “Plus-Up” pilot project that should make plug-in hybrids and electric vehicles a lot more affordable.

Considering recent news that prices on used electric cars are on a downward spiral, and with families potentially eligible to receive as much as $12,000 toward the purchase of an electric car (used is fine) — plus up to $2,000 for a charging unit — some households could land an electric vehicle at net-zero cost.

If you live in California and think this is great news, it is. But hold on before you head to the dealership. To qualify, you have to live in one of two problematic air-pollution zones: either the South Coast Air Quality Management District (covering some of Greater Los Angeles) or the San Joaquin Valley Air Pollution Control District.

Specifically, within those regions, you must reside in “a zip code that contains a disadvantaged census tract,” as the Air Resource Board explains (this document, with a series of localized maps, helps clarify that).

Cleaner transportation for price-pinched households

Info sheet for California EFMP Plus-Up clean-vehicle incentive pilot program

Simply put, buyers with the lowest incomes, purchasing the cleanest vehicles, are eligible for the highest incentive amounts — provided as “cash payments.” Retirees in gated subdivisions and households in other affluent communities probably won’t qualify for this one.

Those who are considered by the program to be Low Income (225 percent of the federal poverty level or less) qualify for a hybrid that’s rated higher than 35 mpg, or $9,500 toward a plug-in hybrid or electric vehicle. Meanwhile, Moderate Income households (226 to 300 percent of the poverty level) qualify for $5,000 toward those hybrids, or $7,500 toward a plug-in hybrid or EV, and those who are considered Above Moderate Income (up to four times the federal poverty level) can get $5,500 toward a plug-in hybrid or EV.

That all applies not just to new vehicles but to used vehicles less than eight years old — which could make some plug-in vehicles and electric cars very, very affordable.

New vehicles may also be eligible for a $1,500 rebate for PHEVs and a $2,500 rebate for EVs.

The incentives actually apply to non-hybrid, gasoline-engine vehicles, too. In that case you don’t even have to be in one of those disadvantaged tracts, but you still need to live in the air-quality districts.

It even covers going carless

And if you’re thinking of going carless, you’re also in luck there. The program doesn’t even require you to buy a replacement car. Instead, depending on your income level, you could, in return, get public transit passes worth between $2,500 and $4,500.

You might say that the program resembles the Car Allowance Rebate System (CARS), or Cash for Clunkers as it was far more widely termed. That program was national in reach and retired more than 690,000 vehicles, incentivizing their replacement with more fuel-efficient new vehicles.

For more information and to clarify eligibility, call the San Joaquin Valley Air Pollution Control District, at 559-230-6000, or the South Coast Air Quality Management District, for the Greater LA region, at 909-396-2647.

This story originally appeared on Green Car Reports. Copyright 2015